Product Manual

6
Troubleshooting
The numbers in parentheses refer to the appropriate breakdown; 660F listed first/1650 listed second.
Trouble Probable Cause Remedy
Table will not lift.
Oil level low in reservoir. Replenish reservoir.
Lowering valve (28/29) or steel ball
(25/26) is not seating.
Clean lowering valve (28/29) or steel
ball (25/26) or replace.
Steel ball (13/14) is not seating. Clean or replace steel ball (13/14).
Relief valve is not adjusted properly.
Reload truck within load capacity and
adjust valve by pressure relief
adjusting screw (54/52).
Table will not remain
elevated.
Lowering valve (28/29) or steel ball
(25/26) not seating properly.
Clean or replace lowering valve
(28/29) or steel ball (25/26).
Oil seal (6) or U-packing (7) is worn
out.
Replace oil seal (6) or U-packing (7).
Table will not lower.
U-packing (7) is worn out. Replace U-packing(7).
Lowering valve plug (28/29) is
clogged.
Replace lowering valve plug (28/29).
Oil leaks from
lowering valve.
O-ring (27/28) is worn out. Replace o-ring (27/28).
Oil leaks from pump
cylinder.
Oil seal (38/39) or U-packing (39/40)
worn out.
Replace oil seal (38/39) or U-packing
(39/40).
Replacement Parts
Replacement parts are listed on the following pages. To order parts or reach our service department, call
1-800-274-6848, Monday through Friday (see our website for business hours, www.waltermeier.com).
Having the Model Number and Serial Number of your machine available when you call will allow us to
serve you quickly and accurately.